Balance-escapement.



No. 685,905. Patented Nov. 5, mm. m. BISKIND.

BALANCE ESCAPEMENT.

[Application filed Feb. 18. 1901.)

(No Model.)

UNITED STATES PATENT OFFICE.

MORRIS BISKIND, OF CLEVELAND, OHIO.

BALANCE-ESCAPEMENT.

SPECIFICATION forming part of Letters Patent No. 685,905, dated November5, 1901.

Application filed February 18, 1901. Serial No. 47,713. (No model.)

To all whom it may concern.-

Be it known that I, MORRIS BISKIND, a subject of Emperor Nicholas ofRussia,and a resident of Cleveland, Ouyahoga county, State of Ohio, haveinvented certain new and useful Improvements in Escapements for Watches,of which the following is a specification.

This invention relates to escapements for watches; and it consists inthe new constructions and combinations of the escapementlever with thebalance-wheel.

The new construction consists in the lengthening of the lever by formingon its end a ring and providing a notch for the ruby-pin in the ringopposite to the end of the lever and also providing two curved armswithin said ring, each extending laterally from the sides of the notchand nearly around to the opposite side, leaving an open space betweentheir ends, for a purpose as hereinafter described.

In the accompanying drawings, Figure 1 is an under side view of thebalance-wheel and the improved lever, showing the relation of theruby-pin with the new lever. Fig. 2 is a side elevation of the same.Fig. 3 is a diagram showing the movements of the ruby-pin in thering-head of the lever.

A is the balance-wheel.

B is the balance-wheel staff, and O is the ruby-pin, attached to the hubof the balancewheel by the side of the staff.

D is the lever, on the end of which is provided a ring E, in which ismade the notch F for the ruby-pin in the opposite side to the end of thelever.

G H are two curved arms extending from each side of the notch F aroundand within a short distance from the inner circle of the ring E andterminating at a point opposite the notch'F, leaving an open spacebetween their ends. These arms form an open inner rlng.

The rotation of the balance-wheel carries the ruby-pin around and itenters the open space at I and passes into the space between arm G andthe ring, as shown by the arrows. In its return movement the ruby-pin isrotated back again to and into notch F. Now the movement of the levergives the impetus to the balance-wheel in the opposite direction, andthe ruby-pin will be rotated around and into said open space and beguided into the space between arm H and the ring in like manner to itsopposite movement.

In this construction should the hair-spring become broken or detachedthe balance-wheel would continue to rotate, but the ruby-pin would beguided into the space between the arms GH and be carried around to thestop and then cease to operate.

In this construction the roller-plate is dispensed with, also thebanking-pins, thus reducing the number of parts and cheapening thestructure, for said lever, with its ring and arms, can be stamped out inone piece ready for use.

Having described my invention, what I claim is- In a watchmovement, alever provided with a ring on its end, a notch in said ring opposite tothe end of the lever, curved arms extending from said notch and aroundwithin the ring and with open termination opposite said notch, and aprojecting point in the ring at said terminal opening, in combinationwith the balance-wheel and the ruby-pin, substantially as described.

Signed by me at Cleveland, Ohio, this 16th day of February, 1901.

MORRIS BISKIND.

Witnesses:

GEO. W. TIBBITTS, CHARLES L. STOCKER,

